Pass the required knowledge tests for hazmat endorsement or upgrades onlyPlease Note: If you have a hazardous material endorsement and you wish to retain it, you will be required to pass the hazardous material knowledge exam. You must apply and receive clearance for a security threat assessment with the Transportation Security Administration. The USA PATRIOT ACT requires background checks for all commercial drivers who apply for, renew or transfer a hazmat endorsement. You are required to show proof of citizenship